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Date:	Mon, 19 Mar 2012 14:23:11 -0700
From:	Eric Dumazet <>
To:	Haiyang Zhang <>
Subject: Re: [PATCH v2,1/1] net/hyperv: Fix the code handling tx busy

On Mon, 2012-03-19 at 14:23 -0700, Haiyang Zhang wrote:
> Instead of dropping the packet, we keep the skb buffer, and return
> NETDEV_TX_BUSY to let upper layer retry send. This will not cause
> endless loop, because the host is taking data away from ring buffer,
> and we have called the stop_queue before returning NETDEV_TX_BUSY.
> The stop_queue was called in the function netvsc_send() in file 
> netvsc.c, then it returns to rndis_filter_send(), which returns to
> netvsc_start_xmit() in file netvsc_drv.c. So the NETDEV_TX_BUSY is
> indeed returned AFTER queue is stopped.
> Signed-off-by: Haiyang Zhang <>
> Reviewed-by: K. Y. Srinivasan <>
> ---


Acked-by: Eric Dumazet <>

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